Hi,
Thanks for letting us know about the issue that you are experiencing.
It's fairly normal for your device to get warm during use, but if you are seeing a message on screen mentioning overheating, there are a few things you can do to help. See more here:
https://support.roku.com/article/226794787-what-should-i-do-if-the-red-light-is-on-or-i-see-a-your-d...If you are still unable resolve the issue, feel free to send me a PM with your Roku account email address and the serial number of your device from Settings>System>About. I'll follow up directly to assist you more from there!
Thanks,
Danny
Danny R.
Roku Forum Moderator